Oval, on ivory, in a gilt-metal frame and fitted red leather case, 7.4cm.
Georgina Sophia (1827-1909), shown here in old age, was the daughter of Thomas Pakenham, 2nd Earl of Longford.
In 1848 she married William Alleyne, Lord Burghley, who inherited as 3rd Marquess of Exeter on the death of his father in 1867.